A nice series on how you can manufacture your own AR-15 from scratch, using just a few bucks worth of material. Well, that and some CnC machinery, and a computer. It's nice to see such happy and skilled Americans at work. Paul Revere was a silversmith, remember? Just imagine what Paul would have done with CnC machinery, and the printable designs you can get right here!
The Free CnC Printable Guns Archive - Complete 15 Jan 2013 Collection